Data recording device, data recording method, and computer program

1. A recording medium initialization apparatus for initializing a recording medium, comprising: an initializing unit to initialize a storage area of the recording medium; and a recording unit to record a user data file and a management information file of the user data file based on a predetermined standard, wherein the initializing unit includes a physical formatting unit configured to perform physical formatting on the recording medium, a file system creation unit configured to create a file system on the basis of a predetermined file system format in the storage area of the recording medium after physical formatting is performed, the file system having a data layout including a partition for recording user data files, a metadata partition included in the partition for recording metadata management information of the user data files, and a logical volume integrity sequence (LVIS) located outside the partition and identifying the number of files and available area on the recording medium, and a directory structure creation unit configured to create, based on the predetermined standard and in the storing area where the file system is created, a directory structure to record both the user data file and the management information file of the user data file, and record, in the metadata partition, an information control block (ICB) containing information indicating the recording location where real data is recorded with regard to each directory contained in the directory structure defined by the predetermined standard, wherein the directory structure creation unit records metadata formed of a collection of file identification information descriptors (FIDs) which contain information indicating the recording location of the information control block of a directory stored directly below one of the each directory as the real data or a file, and the LVIS is recorded based on the recording of ICBs and FIDs of all the directories in the metadata partition.

2. The data recording apparatus according to claim 1 , wherein the predetermined standard is an audio-visual standard, the partition provides a recording space of a file in a recording area of the recording medium and creates a root directory in the partition, and the directory structure creation unit creates an BDMV directory directly below the root directory in the partition and creates, directly below the BDMV directory, a STREAM directory for storing stream files, and a PLAYLIST directory and a CLIPINF directory for storing playlists and clip information files serving as a management information file of a clip AV stream file, respectively, and each of the directories of AUXDATA, BDJO, JAR, and META.

3. The data recording apparatus according to claim 1 , wherein the predetermined file system format is a UDF (Universal Disk Format) established by OSTA (Optical Storage Technology Association).

4. The data recording apparatus according to claim 3 , wherein the directory structure creation unit records, under the root directory of the partition, the ICB and the FIDs with regard to each directory contained in a directory structure defined by the predetermined standard with consideration of the information of child directories lower in the hierarchy of the directory structure, after the directory structure is created by the directory structure creation unit, the file system creation unit records, in the partition, each file for managing a used area in the partition and a used area in the metadata partition, and the LVIS is further recorded based on the total number of recorded directories.

5. A recording medium method for initializing a recording medium, comprising: initializing a storage area of the recording medium; recording a user data file and a management information file of the user data file based on a predetermined standard, wherein the initializing includes performing physical formatting on the recording medium, creating a file system on the basis of a predetermined file system format in the storage area of the recording medium after physical formatting is performed, the file system having a data layout including a partition for recording user data files and a metadata partition included in the partition for recording metadata management information of the user data files, and a logical volume integrity sequence (LVIS) located outside the partition and identifying the number of files and available area on the recording medium, and creating, based on the predetermined standard and in the storing area where the file system is created, a directory structure to record both the user data file and the management information file of the user data file; recording, in the metadata partition created in the file system creating step, an information control block (ICB) containing information indicating the recording location where real data is recorded with regard to each directory contained in the directory structure defined by the predetermined standard; and recording metadata formed of a collection of file identification information descriptors (FIDs) which contain information indicating the recording location of the information control block of a directory stored directly below one of the each directory as the real data or a file, wherein the LVIS is recorded based on the recording of ICBs and FIDs of all the directories in the metadata partition.

6. The data recording method according to claim 5 , wherein the predetermined standard is an audio-visual standard, the file system creating step provides a partition as a recording space of a file in a recording area of the recording medium and creates a root directory in the partition, and the directory structure creating step creates an BDMV directory directly below the root directory in the partition and creates, directly below the BDMV directory, a STREAM directory for storing stream files, and a PLAYLIST directory and a CLIPINF directory for storing playlists and clip information files serving as a management information file of a clip AV stream file, respectively, and each of the directories of AUXDATA, BDJO, JAR, and META.

7. The data recording method according to claim 5 , wherein the predetermined file system format is a UDF (Universal Disk Format) established by OSTA (Optical Storage Technology Association).

8. The data recording method according to claim 7 , wherein the directory structure creating step records, under the root directory of the partition created in the file system creating step, the ICB and the FIDs with regard to each directory contained in a directory structure defined by the predetermined standard with consideration of the information of child directories lower in the hierarchy of the directory structure, after the directory structure is created in the directory structure creating step, each file for managing a used area in the partition and a used area in the metadata partition is recorded in the partition, and the LVIS is further recorded based on the total number of recorded directories.

9. A non-transitory computer-readable medium storing computer readable instructions thereon that when executed by a recording medium initialization apparatus cause the recording medium initialization apparatus to perform a method comprising: initializing a storage area of the recording medium; recording a user data file and a management information file of the user data file based on a predetermined coding standard, wherein the initializing includes performing physical formatting on the recording medium, creating a file system on the basis of a predetermined file system format in the storage area of the recording medium after physical formatting is performed, the file system having a data layout including a partition for recording user data files and a metadata partition included in the partition for recording metadata management information of the user data files, and a logical volume integrity sequence (LVIS) located outside the partition and identifying the number of files and available area on the recording medium, and creating, based on the predetermined standard and in the storing area where the file system is created, a directory structure to record both the user data file and the management information file of the user data file; recording, in the metadata partition created in the file system creating step, an information control block (ICB) containing information indicating the recording location where real data is recorded with regard to each directory contained in the directory structure defined by the predetermined standard; and recording metadata formed of a collection of file identification information descriptors (FIDs) which contain information indicating the recording location of the information control block of a directory stored directly below one of the each directory as the real data or a file, wherein the LVIS is recorded based on the recording of ICBs and FIDs of all the directories in the metadata partition.